公开(公告)号：CA1328560C

公开(公告)日：1994-04-19

申请号：CA604951

申请日：1989-07-06

Applicant: BASF AG

Inventor： VOLKERT OTTO

IPC: C08G18/00 ,  C08J9/00 ,  C08J9/12 ,  C08J9/14 ,  C08L75/00

Abstract: PROCESS FOR PRODUCING CELLULAR PLASTICS BY THE POLYISOCYANATE POLYADDITION METHOD BY MEANS OF STABLE EMULSIONS CONTAINING BLOWING AGENTS, AND SUCH EMULSIONS This invention concerns a process for producing cellular plastics by the polyisocyanate polyaddition process by reaction of a) organic and/or modified organic polyiso cyanates with b) at least one high molecular compound with at least two reactive hydrogens and optionally c) low molecular chain extenders and/or cross linking agents in the presence of d) blowing agents e) catalysts f) additives and/or processing aids where low boiling fluorinated or perfluorinated hydrocarbons with 3 to 8 carbons that are insoluble or almost insoluble in (a) to (c), sulfur hexafluoride or mixtures thereof are used as blowing agent (d) which is emulsified in reaction components (a), (b), mixtures of (b) and (c) or (a) and (b) as well as stable blowing agent emulsions of the aforementioned blowing agents (d) and reaction components (a), (b) or (b) and (c).

公开(公告)号：AU619382B2

公开(公告)日：1992-01-23

申请号：AU4911990

申请日：1990-02-06

Applicant: BASF AG

Inventor： FISCH HERBERT ,  MAEMPEL LOTHAR ,  VOLKERT OTTO

IPC: C08G18/08 ,  C08G18/10 ,  C08L61/10 ,  C09J175/04 ,  C08G18/12 ,  C08G18/32 ,  C08G18/34 ,  C08G18/38 ,  C08G18/30 ,  C08L75/04

Abstract: Emulsifier-free aqueous polyurethane dispersions are prepared by reacting (a) dihydroxy compounds, (b) diisocyanates and (c) chain extenders to give a prepolymer having terminal isocyanate groups, then reacting the prepolymer with (d) salts of aliphatic aminocarboxylic or -sulfonic acids or amino-containing or hydroxyl-containing tertiary ammonium salts, dispersing the resulting polyurethane in water and, if required, removing the organic solvent by distillation. In the process, an organic condensation resin which is dissolved in a solvent is admixed before the polyurethane obtained is dispersed in water.

公开(公告)号：DE4143148B4

公开(公告)日：2004-09-16

申请号：DE4143148

申请日：1991-12-28

Applicant: BASF AG

Inventor： VOLKERT OTTO

IPC: C08J9/14 ,  C08L75/00 ,  C08G18/08

公开(公告)号：DE59703235D1

公开(公告)日：2001-05-03

申请号：DE59703235

申请日：1997-04-24

Applicant: BASF AG

Inventor： VOLKERT OTTO ,  PITTRICH KLAUS

IPC: C08G18/10 ,  C08G18/48 ,  C08G18/76 ,  C08G101/00

Abstract: Elastic polyurethane moldings having a compact surface and a cellular core are produced by reactinga) modified organic polyisocyanates withb) at least one relatively high molecular weight compound containing at least two reactive hydrogen atoms and, if desired,c) low molecular weight chain extenders in the presence ofd) blowing agents,e) catalysts and, if desired,f) customary auxiliaries and/or additivesin a closed mold with compaction, wherein the modified organic polyisocyanate used is at least one reaction product of pure MDI and at least one polyether alcohol (polyoxyalkylene polyol), the modified organic polyisocyanate having an NCO content of

公开(公告)号：DE59603697D1

公开(公告)日：1999-12-30

申请号：DE59603697

申请日：1996-05-17

Applicant: BASF AG

Inventor： VOLKERT OTTO ,  BRANDT PETER ,  FUCHS HARALD

IPC: A43B13/04 ,  C08G18/12 ,  C08G18/32 ,  C08G18/66

Abstract: A process for producing moldings containing ester and urethane groups and having a cellular core and a compacted surface zone, preferably shoe soles, comprises reacting a) isocyanate semiprepolymers containing ester groups and having an isocyanate content of from 10 to 26% by weight, which in turn are prepared by reacting ai) 4,4'-MDI or mixtures of 4,4'-MDI and modified or unmodified MDI isomers, with aii) difunctional to trifunctional polyester polyols having molecular weights of from 600 to 3000 and aiii) at least one branched-chain dihydroxy compound containing at least one bonded ester unit as bridge and having a molecular weight of up to 500, with b) at least one relatively high molecular weight polyhydroxyl compound and, if desired, c) low molecular weight chain extenders and/or crosslinkers in the presence of d) blowing agents, e) catalysts and, if desired, f) additives in a closed mold with compaction. The isocyanate semiprepolymers containing ester groups which can be used in this process are liquid at room temperature.

公开(公告)号：CA2259588A1

公开(公告)日：1999-08-07

申请号：CA2259588

申请日：1999-02-05

Applicant: BASF AG

Inventor： SCHERZER DIETRICH ,  VOLKERT OTTO

IPC: C08G18/08 ,  C08G18/48 ,  C08J9/14 ,  C08L75/04

Abstract: A process for the preparation of fine-cell rigid polyurethane foams by the reaction of a) polyisocyanates with b) compounds having at least two reactive hydrogen atoms in the presence of c) expanding agents, d) catalysts and, optionally, e) auxiliaries and/or additives, where the expanding agents c) used are perfluoro compounds which are emulsified in at least one of the components a) or b), and water and air are removed from the components a) to e) prior to conversion to the polyurethane.

公开(公告)号：TR199802150T2

公开(公告)日：1999-02-22

申请号：TR9802150

申请日：1997-04-24

Applicant: BASF AG

Inventor： VOLKERT OTTO ,  PITTRICH KLAUS

IPC: C08G18/10 ,  C08G18/48 ,  C08G18/76 ,  C08G101/00

Abstract: Elastic polyurethane moldings having a compact surface and a cellular core are produced by reactinga) modified organic polyisocyanates withb) at least one relatively high molecular weight compound containing at least two reactive hydrogen atoms and, if desired,c) low molecular weight chain extenders in the presence ofd) blowing agents,e) catalysts and, if desired,f) customary auxiliaries and/or additivesin a closed mold with compaction, wherein the modified organic polyisocyanate used is at least one reaction product of pure MDI and at least one polyether alcohol (polyoxyalkylene polyol), the modified organic polyisocyanate having an NCO content of

公开(公告)号：ZA9703922B

公开(公告)日：1998-11-09

申请号：ZA9703922

申请日：1997-05-07

Applicant: BASF AG

Inventor： VOLKERT OTTO ,  PITTRICH KLAUS

IPC: C08G18/10 ,  C08G18/48 ,  C08G18/76 ,  C08G101/00 ,  C08G ,  C08J ,  C08L

CPC classification number: C08G18/7671 ,  C08G18/10 ,  C08G18/48 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/4837 ,  C08G2101/0008 ,  C08G2101/0033 ,  C08G2101/0083 ,  C08G2410/00

公开(公告)号：CA2000019C

公开(公告)日：1998-11-03

申请号：CA2000019

申请日：1989-10-02

Applicant: BASF AG

Inventor： VOLKERT OTTO ,  REICH ERHARD ,  TINTELNOT DIETER

IPC: A43B13/04 ,  C08G18/00 ,  C08J9/14 ,  C08L75/04 ,  B29C49/00 ,  C08J9/34

Abstract: The invention deals with a process for the preparation of molded articles having a compressed peripheral zone and a cellular core, such as for example, flexible elastic shoe soles having a density of from 0.4 to 1.0 g/cm3, comprising reacting; a) organic and/or modified organic polyisocyanates with; b) at least one higher molecular weight compound having at least reactive hydrogen atoms and with or without; c) lower molecular weight chain extending agents and/or crosslinking agents; in the presence of d) low boiling point aliphatic and/or cycloaliphatic hydrocarbons having 4-8 carbon atoms in the molecule preferably pentanes as blowing agents; e) catalysts; and with or without; f) auxiliaries and/or additives.

公开(公告)号：CA2086997A1

公开(公告)日：1993-07-12

申请号：CA2086997

申请日：1993-01-08

Applicant: VOLKERT OTTO ,  BASF AG

Inventor： VOLKERT OTTO

IPC: C08G18/08 ,  C08G18/00 ,  C08G101/00 ,  C08J9/14

Abstract: The invention relates to a process for the production of rigid polyurethane foams using a specific blowing agent mixture of highly fluorinated and/or perfluorinated organic compounds, cyclopentane and, if desired, aliphatic and/or further cycloaliphatic hydrocarbons having 4 to 8 carbon atoms.